Wrench.



J. HELSTROM.

WRENCH.

APPLICATION FILED APR. 19, 1912.

Patented Oct. 8, 1912.

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JOHN HELSIROM, OF MORRISTOWN, NEW JERSEY.

WRENCH.

Specification of Letters Patent.

Patented Oct. 8, 1912.

Application filed April 19, 1912. Serial No. 691,885.

To all whom it may concern:

Be it known that I, J OIIN llnnsiraoni, citizen of the United States,residing at Morristown, in the county of Morris and State of New Jersey,have invented certain new and useful Improvements in \V renches, ofwhich the following is a specification.

This invention has relation to wrenches and has for its object toprovide a wrench of simple structure, the parts of which are soassembled that the jaws will positively retain their positions withrelation to each other after they have been set or adjusted.

ith this object in view, the wrench includes a handle member having ajaw fixed at one end. The shank is slidably mounted in the handle memberand is provided with a jaw which, when the shank is moved, is adapted toshift with relation to the first mentioned aw. A grip is ournaled uponthe handle member, and a nut is screw-threaded in the grip and isprovided with a sleeve having a threaded collar which engages the threadprovided upon the said shank. Means provided for preventing the gripfrom moving longitudinally with relation to the handle member. Alsomeans is provided for preventing the shank from rotating with relationto the handle member.

For a full understamling of the invention and the merits thereof,reference is to be had to the following description and accompanyingdrawings, in which:

Figure 1. is a perspective view of the wrench; Fig. 9. is a longitudinalsectional view of the same; Fig. 3 is a transverse seetional view of thesame cut on the line 3-3 of Fig. 2.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawing by the samereference characters.

As illustrated in the accompanying drawing, the wrench includes a handlemember 1 which is hollow throughout its length and which is provided atone end with a fixed jaw 2. The opening through the handle member 1 inthe vicinity of the jaw 2 is angular or non-circular as at 3. Anon-circular shank 1 fits snugly in the non-circular portion of theopening tln'ough the handle member 1 and is arranged to slide withrelation to the handle member 1. This shank provided at its outer endwith a jaw The jaws 2 and 5 are juxtaposed with relation to each other.The shank 1 is provided at its inner end with a thread (i. A grip 7 isjournaled upon the handle member 1 and is provided at its end nearestthe jaw 2 with a ferrule or flange 8, the edge of which is located in agroove 5) provided upon the handle member 1. This ferrule holds the grip7 against movement longitudinally along the handle member 1, but permitsthe grip to be rotated upon the handle member 1.. A nut 10 isserew-threadcd into the end of the grip 7 which is remote from the jaw 9and the said nut is provided with a sleeve 11 which is screw-threadedinternally as at 12.

The thread 12 of the sleeve engages the thread 6 upon the shank 4;.lhcre'liire, it will be seen that when the grip 7 rotated upon the shank4, the nut 10 is carried around with the same and by reason of theengagement of the threads 12 and G, the shank 1 and the jaw 5 areshifted with relation to the handle member 1 and the jaw 2. By such anarrangmient. it is an easy matter to control the shiftable jaw withrelation to the fixed jaw upon the handle member aml thus the said jawsmay be held in close contact with the sides of the nut which is receivedbetween them and therefore in the use of the wrench it is not likelythat the corners of the nut will be broken or mi'ltilated by reason ofthe spreading of the jaws during the operation of turning the nut.

Having thus described the invention, what is claimed as new is:

A wrench comprising a handle member having a jaw, said handle memberbeing provided with an opening extending through the length of the same,a shank slidably mounted in said opening and restrained against rotationtherein, a head In testimony whereof I aflix my signature carried bysald shank, said handle member in presence of two wltnesses. having agroove, a grip ournaled upon the handle member, a ferrule mounted uponthe JOHN HELSTROM. [L. s.] grip and having an edge portion located in Isaid groove, and a nut fixed to the grip and Witnesses:

having a threaded sleeve which engages the V ANDREW'BOI-IM,

thread upon the shank. CHRISTIAN THOMPSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

